SPL Set ID: 381ffe44-d5d8-4380-a3cd-6d6a5e9ef55d

Droxidopa capsules contain droxidopa, which is a synthetic amino acid precursor of norepinephrine, for oral administration. Chemically, droxidopa is (-)-threo-3-(3, 4-Dihydroxyphenyl)-L-serine. It has the following structural formula: Droxidopa is an odorless, tasteless, white to light brown crystalline powder. It is soluble in dilute hydrochloric acid and practically insoluble in methanol, glacial acetic acid, ethanol, acetone, ether and chloroform. It has a molecular weight of 213.19 and a molecular formula of C 9 H 11 NO 5 . Droxidopa capsules also contain the following inactive ingredients: magnesium stearate, mannitol and pregelatinized starch. The capsule shell is printed with black ink. The black ink contain black iron oxide, propylene glycol, potassium hydroxide and shellac. The capsule shell contains the following inactive ingredients: 100 mg-gelatin, titanium oxide, iron oxide red, iron oxide black, FD&C Blue2, 200 mg – gelatin, titanium dioxide, iron oxide black and iron oxide yellow, 300 mg – gelatin, titanium dioxide, FD&C BLUE 1, D&C YELLOW 10. Droxidopa capsules differ in size and color by strength [see Dosage Forms and Strengths (3)]. structure